Method for manufacturing light-emitting device packages, light-emitting device package strip, and light-emitting device package

ABSTRACT

Disclosed is a method for manufacturing a chip scale package (CSP) for a light-emitting diode (LED). The method may include a light-emitting device mounting step for mounting a plurality of light-emitting devices on a substrate strip, a phosphor forming step for forming a phosphor on the plurality of light-emitting devices, a reflective member forming step for forming a reflective member on the substrate strip to surround the phosphor, and a package singulation step for singulating unit packages by cutting the substrate strip and the reflective member.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims the benefit of Korean Patent Application Nos.10-2014-0108346, filed on Aug. 20, 2014, 10-2014-0164363, filed onNovember 24, 2014, and 10-2014-0164364, filed on Nov. 24, 2014, in theKorean Intellectual Property Office, respectively, the disclosure ofwhich is incorporated herein in its entirety by reference.

BACKGROUND 1. Field

The present invention relates to a method for manufacturinglight-emitting device packages, a light-emitting device package strip,and a light-emitting device package and, more particularly, to a methodfor manufacturing light-emitting device packages usable in a displayapparatus or a lighting apparatus, a light-emitting device packagestrip, and a light-emitting device package.

2. Description of the Related Art

A light-emitting diode (LED) refers a type of semiconductor elementcapable of displaying light of various colors by providing alight-emitting source using a PN diode of a compound semiconductor. TheLED has a long life, a small size, and a small weight, and can be drivenusing a low voltage. In addition, the LED is durable against impact andvibration, does not require preheating or complicated driving, and ismountable on a substrate or a lead frame in various forms beforepackaging. As such, the LED may be modularized for various purposes.

In general, a method for manufacturing a light-emitting device packageincludes mounting a light-emitting device on a lead frame, forming areflective member, and then forming an optical conversion member on thelight-emitting device.

However, according to the above conventional light-emitting devicepackage manufacturing method, since light-emitting devices areseparately mounted on substrates and a reflective member and an opticalconversion member are formed on each of the light-emitting devices, alot of time and cost are required for a packaging process, the price ofproducts are increased, and thus productivity is reduced. As such, themanufactured light-emitting device packages have a relatively large sizeor thickness and thus small and thin products cannot be manufactured.

Furthermore, according to the conventional light-emitting device packagemanufacturing method, since optical members are separately provided onlight-emitting devices, a performance difference occurs among themanufactured light-emitting device packages.

In addition, according to the conventional light-emitting device packagemanufacturing method, a substrate strip is deformed during thelight-emitting device packages are manufactured.

SUMMARY

The present invention provides a method capable of manufacturing a largenumber of light-emitting device packages through a simple process,reducing the price of products, improving productivity, manufacturingsmall and thin products, and lowering a performance difference amongmanufactured products.

The present invention also provides a method capable of preventingdeformation of a substrate strip during light-emitting device packagesare manufactured, lowering an error rate, greatly reducing process timeand cost, improving productivity, manufacturing small and thin products,and lowering a performance difference among manufactured products.

However, the scope of the present invention is not limited thereto.

According to an aspect of the present invention, there is provided amethod for manufacturing light-emitting device packages, the methodincluding a light-emitting device mounting step for mounting a pluralityof light-emitting devices on a substrate strip, a phosphor forming stepfor forming a phosphor on the plurality of light-emitting devices, areflective member forming step for forming a reflective member on thesubstrate strip to surround the phosphor, and a package singulation stepfor singulating unit packages by cutting the substrate strip and thereflective member.

In the phosphor forming step, the phosphor may be squeeze-printed on thesubstrate strip and the light-emitting devices using a mask, and, in thereflective member forming step, reflective member accommodation cavitiesmay be formed by disposing a plate mold on an upper surface of thephosphor to surround the phosphor, and a molding material may be filledin the reflective member accommodation cavities.

In the phosphor forming step, phosphor accommodation cavities may beformed by disposing a mold on the light-emitting devices, and thephosphor may be filled in the phosphor accommodation cavities.

In the package singulation step, the reflective member and the substratestrip may be cut along cutting lines.

In the phosphor forming step, the phosphor may be coated on wholesurfaces of the light-emitting devices and the substrate strip, themethod may further include a reflective member accommodation cavityforming step for forming reflective member accommodation cavities bycutting or etching parts of the phosphor, after the phosphor formingstep, and, in the reflective member forming step, a molding material maybe filled in the reflective member accommodation cavities.

The method may further include a reflective member curing step forcuring the reflective member to harden the reflective member, after thereflective member forming step.

The method may further include a supporting member forming step forforming a supporting member under the substrate strip to support thesubstrate strip.

The supporting member forming step may include a light-transmittingglass preparing step for preparing a light-transmitting glass, a UVadhesive coating step for coating a UV adhesive on the substrate stripand the light-transmitting glass to adhere the substrate strip to thelight-transmitting glass, and a substrate strip fixing step fortemporarily fixing the substrate strip onto the light-transmittingglass, and the package singulation step may include a reflective memberand substrate strip cutting step for cutting the reflective member andthe substrate strip, a UV light projection step for projecting UV lightonto the UV adhesive through the light-transmitting glass to eliminatean adhesive force of the UV adhesive, and a supporting member separationstep for separating the substrate strip from the supporting member.

The supporting member forming step may include an insulator fixing stepfor fixing an insulator having provided a wiring layer thereon, underthe substrate strip, a through hole forming step for forming throughholes in the insulator, and a through electrode forming step for formingthrough electrodes in the through holes.

According to another aspect of the present invention, there is provideda light-emitting device package strip including a substrate strip, aplurality of light-emitting devices mounted on the substrate strip, aphosphor provided on the plurality of light-emitting devices, areflective member provided to surround the phosphor, and a supportingmember provided under the substrate strip to support the substratestrip.

The supporting member may be light-transmitting glass temporarilyadhered using a UV adhesive to be separable from the substrate strip.

According to another aspect of the present invention, there is provideda light-emitting device package including a substrate, a light-emittingdevice mounted on the substrate, a phosphor provided on thelight-emitting device, and a reflective member provided to surround thephosphor and having a first cut surface on a side surface thereof.

The substrate may be a lead frame having a first electrode provided at aside based on an electrode separation space, a second electrode providedat another side based on the electrode separation space, and a mountingsurface provided to mount the light-emitting device thereon, and mayhave a second cut surface on a side surface thereof.

The first cut surface and the second cut surface may be located on thesame plane.

The light-emitting device package may further include a supportingmember provided under the substrate to support the substrate.

The substrate may have a second cut surface on a side surface thereof,and the supporting member may further include an insulator fixed underthe substrate and having a third cut surface, through electrodespenetrating through the insulator, and a rear wiring layer connected tothe through electrodes and having a fourth cut surface.

The first cut surface, the second cut surface, the third cut surface,and the fourth cut surface may be located on the same plane.

The light-emitting device package may include side electrodes providedon side surfaces of the substrate and the supporting member.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present inventionwill become more apparent by describing in detail exemplary embodimentsthereof with reference to the attached drawings in which:

FIG. 1 is a flowchart of a method for manufacturing light-emittingdevice packages, according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 3 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 4 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 5 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 6 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 7 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 8 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 1;

FIG. 9 is a perspective view showing a package singulation step of thelight-emitting device package manufacturing method of FIG. 1;

FIG. 10 is a cross-sectional view showing a phosphor forming step of thelight-emitting device package manufacturing method of FIG. 1;

FIG. 11 is a flowchart of a method for manufacturing light-emittingdevice packages, according to other embodiments of the presentinvention;

FIG. 12 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 11;

FIG. 13 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 11;

FIG. 14 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 11;

FIG. 15 is a flowchart of a method for manufacturing light-emittingdevice packages, according to still other embodiments of the presentinvention;

FIG. 16 is a cross-sectional view of a light-emitting device packageaccording to some embodiments of the present invention;

FIG. 17 is a flowchart of a method for manufacturing light-emittingdevice packages, according to some embodiments of the present invention;

FIG. 18 is a flowchart of a method for manufacturing light-emittingdevice packages, according to other embodiments of the presentinvention;

FIG. 19 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 18;

FIG. 20 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 18;

FIG. 21 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 18;

FIG. 22 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 18;

FIG. 23 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 18;

FIG. 24 is a flowchart of a method for manufacturing light-emittingdevice packages, according to still other embodiments of the presentinvention;

FIG. 25 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 26 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 27 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 28 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 29 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 30 is a cross-sectional view showing steps of the light-emittingdevice package manufacturing method of FIG. 24; and

FIG. 31 is a cross-sectional view showing other steps of thelight-emitting device package manufacturing method of FIG. 24.

FIG. 32 is a cross-sectional view showing other steps of thelight-emitting device package manufacturing method of FIG. 24.

DETAILED DESCRIPTION

Hereinafter, the present invention will be described in detail byexplaining embodiments of the invention with reference to the attacheddrawings.

A chip scale package (CSP) is a high power package regarded as anext-generation light source in addition to a wafer level package (WLP),a laminated ceramic package, a multi-chip package, a metal package, anda chip on board (COB). Compared to conventional light-emitting devicepackages, the CSP is producible in a small size at a high density. Assuch, the CSP may be produced at a low cost through a simple process,and have a high heat resistance and an excellent color uniformity.

The CSP corresponds to a technology of providing a light-emitting devicepackage on a chip scale, and is characterized in that a large number oflight-emitting devices are mounted on a substrate strip, a phosphor iscoated simultaneously on the light-emitting devices, and then packagesare singulated.

Accordingly, the CSP has a size similar to or slightly greater than thatof the light-emitting device. This package does not require anadditional submount or substrate, and may be directly connected to aboard.

Furthermore, as a surface mount device having PN junction, the CSP has asimple bonding pad space and thus a standard test may be taken thereonwithout an additional complicated process.

FIG. 16 is a cross-sectional view of a light-emitting device package 100according to some embodiments of the present invention.

As illustrated in FIG. 16, the light-emitting device package 100according to some embodiments of the present invention may include asubstrate 11, a light-emitting device 20, a phosphor 30, and areflective member 40.

For example, as illustrated in FIG. 16, the light-emitting devicepackage 100 may include the substrate 11, the light-emitting device 20mounted on the substrate 11, the phosphor 30 provided on thelight-emitting device 20, and the reflective member 40 provided tosurround the phosphor 30 and having a first cut surface 40 a on a sidesurface thereof.

For example, the substrate 11 may be formed of metal such as aluminum(Al), copper (Cu), zinc (Zn), tin (Sn), lead (Pb), gold (Au), or silver(Ag), and may be a lead frame having a form of a perforated or bentplate.

Instead of the lead frame, the substrate 11 may be a printed circuitboard (PCB) produced by stacking a plurality of epoxy-based resin sheetson one another and forming a first electrode and a second electrode as awiring layer. Alternatively, the substrate 11 may be a flexible printedcircuit board (FPCB) formed of a flexible material.

Furthermore, as illustrated in FIG. 16, the substrate 11 may be a leadframe having a first electrode 11-1 provided at a side based on anelectrode separation space 12, a second electrode 11-2 provided atanother side based on the electrode separation space 12, and a mountingsurface provided to mount the light-emitting device 20 thereon, and mayhave a second cut surface 11 a on a side surface thereof.

Here, the first cut surface 40 a and the second cut surface 11 a may belocated on the same plane.

Specifically, the light-emitting device package 100 according to someembodiments of the present invention is the above-described CSP productand may be manufactured using a light-emitting device packagemanufacturing method to be described below.

Accordingly, the light-emitting device package 100 may be appropriatefor a high-power light-emitting device package due to high optical powerand a high current density thereof, and may achieve high reliabilitybecause wire bonding is not necessary. Furthermore, the light-emittingdevice package 100 may have a high packaging density and have easyconnectivity through surface mount technology.

In addition, the light-emitting device package 100 may be mass-producedthrough a simple process, and may have a high color uniformity becausethe phosphor 30 is coated simultaneously on a plurality oflight-emitting devices 20 and thus the amount of the phosphor 30 doesnot greatly differ among the light-emitting devices 20.

Therefore, the light-emitting device package 100 according to someembodiments of the present invention may have a small and thin sizeclose to a chip size, and achieve a high color uniformity compared toconventional light-emitting device packages.

FIG. 1 is a flowchart of a method for manufacturing light-emittingdevice

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 packages, according to some embodiments of the presentinvention, FIGS. 2, 3, 4, 5, 6, 7 8, and 10 are cross-sectional viewsshowing steps of the light-emitting device package manufacturing methodof FIG. 1, and FIG. 9 is a perspective view showing a packagesingulation step S14 of the light-emitting device package manufacturingmethod of FIG. 1.

As illustrated in FIGS. 1 to 10, the light-emitting device packagemanufacturing method according to some embodiments of the presentinvention may include a light-emitting device mounting step S11 formounting the light-emitting devices 20 on the substrate strip 10, aphosphor forming step S12 for forming the phosphor 30 on thelight-emitting devices 20, a reflective member forming step S13 forforming the reflective member 40 on the substrate strip 10 to surroundthe phosphor 30, and the package singulation step S14 for singulatingunit packages by cutting the substrate strip 10 and the reflectivemember 40.

Here, in the light-emitting device mounting step S11, as illustrated inFIG. 2, the light-emitting devices 20 may be mounted on the substratestrip 10 in the form of flip chips. Specifically, the light-emittingdevices 20 may be mounted on the substrate strip 10 by applying solderpaste to one surface of the substrate strip 10, disposing thelight-emitting devices 20 having electrode patterns at locationscorresponding to the solder paste in such a manner that lower surfacesof the light-emitting devices 20 contact the solder paste, andperforming a reflow process. In this case, the solder paste may behardened after the reflow process to firmly fix the substrate strip 10and the light-emitting devices 20 to each other.

The substrate strip 10 may include a plurality of substrate units, aplurality of substrate regions provided by the substrate units, and aplurality of electrode separation spaces 12 separately provided in thesubstrate regions. In this case, the electrode separation spaces 12 arecavities provided along a length direction of the substrate regions andmay be filled with a molding material. Specifically, the electrodeseparation spaces 12 may be filled by injecting the molding materialusing a capillary phenomenon after the light-emitting devices 20 aremounted, or may be filled by squeeze-printing the molding material afterthe light-emitting devices 20 mounted and then the substrate strip 10 isturned over.

As illustrated in FIGS. 3, 4, and 5, in the phosphor forming step S12,the phosphor 30 may be squeeze-printed simultaneously on the substratestrip 10 and

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 the light-emitting devices 20 using a mask M. Forexample, after the light-emitting device mounting step S11, the mask Mmay be disposed and then the phosphor 30 may be coated simultaneously onthe light-emitting devices 20 using a squeezer S.

In this case, since the thickness of the phosphor 30 is adjustable byadjusting the height of the mask M, the thickness of the light-emittingdevice packages may be easily adjusted based on the type of a lightingapparatus.

Here, the squeezer S is a type of pressure forming tool capable ofpressing the phosphor 30 to be uniformly filled in printing holesprovided by the mask M. The squeezer S may be a horizontally movingsqueezer as illustrated in FIG. 4, or a vertically moving squeezer likea piston. Alternatively, various printing rolls, injection devices,sprays, and inkjet printer components may be used.

For example, the phosphor 30 may be filled in a fluid state and thenhardened, and may have a composition and a color as described below.

The phosphor 30 may include a material such as quantum dots (QDs), andthe phosphor 30 and/or the QDs may be used in combination or solely.

Alternatively, in the phosphor forming step S12, as illustrated in FIG.10, phosphor accommodation cavities A2 may be formed by disposing a mold2 on the light-emitting devices 20, and the phosphor 30 may be filled inthe phosphor accommodation cavities A2. In this case, since thethickness of the phosphor 30 is adjustable by adjusting the mold 2, thethickness of the light-emitting device packages may be easily adjustedbased on the type of a lighting apparatus.

Accordingly, since the phosphor 30 is coated simultaneously on thelight-emitting devices 20, the phosphor 30 may be coated uniformly onthe light-emitting devices 20 compared to a case in which a phosphor iscoated separately on light-emitting devices, and thus light-emittingdevice packages having improved color uniformity may be manufactured.

In the reflective member forming step S13, as illustrated in FIGS. 6 to8, reflective member accommodation cavities A1 may be formed bydisposing a plate mold 1 on an upper surface of the phosphor 30 tosurround the phosphor 30, and a molding material may be filled in thereflective member accommodation cavities A1.

Here, the molding material may include at least one selected from thegroup consisting of epoxy resin composition, silicone resin composition,modified epoxy resin composition, modified silicone resin composition,polyimide resin composition,

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 modified polyimide resin composition, modifiedpolyimide resin composition, polyphthalamide (PPA), polycarbonate resin,polyphenylene sulfide (PPS), liquid crystal polymer (LCP), acrylonitrilebutadiene styrene (ABS) resin, phenolic resin, acrylic resin,polybutylene terephthalate (PBT) resin, and combinations thereof. Theseresins may contain a light-reflecting material such as titanium oxide,silicon dioxide, titanium dioxide, zirconium dioxide, potassiumtitanate, alumina, aluminum nitride, boron nitride, mullite, chromium,or a white-based or metal-based component.

The reflective member 40 may be formed of the molding material includingat least one selected from the group consisting of epoxy moldingcompound (EMC) including a reflective material, white silicone includinga reflective material, photoimageable solder resist (PSR), andcombinations thereof.

Accordingly, the reflective member 40 is formed to surround the phosphor30, and may adjust optical paths in such a manner that light generatedby the light-emitting devices 20 proceeds upward from the light-emittingdevices 20 through the phosphor 30.

In the package singulation step S14, as illustrated in FIGS. 8 and 9,the reflective member 40 and the substrate strip 10 may be cut alongcutting lines L1 and L1 using the rotation of a cutting blade or ashearing force of a cutter. Here, the cutting lines L1 and L1 arearbitrary lines for splitting the reflective member 40 in a firstdirection and may be changed as necessary to adjust the width of the cutpieces of the reflective member 40, or changed to adjust the size ofunit packages.

Here, for example, the cutting blade may rotate and cut the reflectivemember 40 and the substrate strip 10 at least once in the horizontal andvertical directions, thereby manufacturing a plurality of unit packages.The cutter may include a plurality of cutting blades as a unit and thuscut the reflective member 40 and the substrate strip 10 in thehorizontal and vertical directions at the same time, therebymanufacturing a plurality of unit packages.

Accordingly, a plurality of unit packages having a small performancedifference among products may be manufactured through a simple process.

FIG. 11 is a flowchart of a method for manufacturing light-emittingdevice packages, according to other embodiments of the presentinvention, and FIGS. 12 to 14 are cross-sectional views showing steps ofthe light-emitting device package manufacturing method of FIG. 11.

As illustrated in FIGS. 11, 12, 13 and 14, the light-emitting devicepackage manufacturing method according to other embodiments of thepresent invention may include a light-emitting device mounting step S21for mounting the light-emitting devices 20 on the substrate strip 10, aphosphor forming step S22 for forming the phosphor 30 on thelight-emitting devices 20, a reflective member forming step S24 forforming the reflective member 40 on the substrate strip 10 to surroundthe phosphor 30, and a package singulation step S25 for sigulating unitpackages by cutting the substrate strip 10 and the reflective member 40.

As illustrated in FIGS. 12 and 13, in the phosphor forming step S22, thephosphor 30 is coated simultaneously on the whole surfaces of thelight-emitting devices 20 and the substrate strip 10, and thelight-emitting device package manufacturing method may further include areflective member accommodation cavity forming step S23 for formingreflective member accommodation cavities A3 by cutting or etching partsof the phosphor 30, after the phosphor forming step S22. For example, acutting blade 3 may rotate and cut the phosphor 30 to form thereflective member accommodation cavities A3 in the phosphor 30 in alength direction.

As illustrated in FIG. 14, in the reflective member forming step S24, amolding material may be filled in the reflective member accommodationcavities A3.

In this case, the molding material may be filled in a fluid state andthen hardened into the reflective member 40.

The molding material may include at least one selected from the groupconsisting of EMC including a reflective material, white siliconeincluding a reflective material, PSR, and combinations thereof.

Accordingly, the reflective member 40 is formed to surround the phosphor30, and may adjust optical paths in such a manner that light generatedby the light-emitting devices 20 proceeds upward from the light-emittingdevices 20 through the phosphor 30.

FIG. 15 is a flowchart of a method for manufacturing light-emittingdevice packages, according to still other embodiments of the presentinvention.

As illustrated in FIG. 15, the light-emitting device packagemanufacturing method according to still other embodiments of the presentinvention may include a light-emitting device mounting step S31 formounting the light-emitting devices 20 on

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 the substrate strip 10, a phosphor forming step S32 forforming the phosphor 30 on the light-emitting devices 20, a reflectivemember forming step S33 for forming the reflective member 40 on thesubstrate strip 10 to surround the phosphor 30, and a packagesingulation step S35 for singulating unit packages by cutting thesubstrate strip 10 and the reflective member 40, and may further includea reflective member curing step S34 for curing the reflective member 40to harden the reflective member 40, after the reflective member formingstep S33. Through the reflective member curing step S34, the reflectivemember 40 may be hardened to firmly fix the reflective member 40 and thesubstrate strip 10 to each other.

FIG. 20 is a cross-sectional view of a light-emitting device packagestrip 200, and FIG. 17 is a flowchart of a method for manufacturinglight-emitting device packages, according to some embodiments of thepresent invention.

As illustrated in FIG. 20, the light-emitting device package strip 200may include the substrate strip 110, the light-emitting devices 120, thephosphor 130, the reflective member 140, and a supporting member 50.

For example, as illustrated in FIG. 20, the light-emitting devicepackage strip 200 may include the substrate strip 110, thelight-emitting devices 120 mounted on the substrate strip 110, thephosphor 130 provided on the light-emitting devices 120, the reflectivemember 140 provided to surround the phosphor 130, and the supportingmember 50 provided under the substrate strip 110 to support thesubstrate strip 110.

As illustrated in FIG. 17, the light-emitting device packagemanufacturing method according to some embodiments of the presentinvention may include a light-emitting device mounting step S1 formounting the light-emitting devices 120 on the substrate strip 110, aphosphor forming step S2 for forming the phosphor 130 on thelight-emitting devices 120, a reflective member forming step S3 forforming the reflective member 140 on the substrate strip 110 to surroundthe phosphor 130, a supporting member forming step S4 for forming thesupporting member 50 under the substrate strip 110 to support thesubstrate strip 110, and a package singulation step S5 for singulatingunit packages by cutting the substrate strip 110 and the reflectivemember 140.

FIG. 18 is a flowchart of a method for manufacturing light-emittingdevice packages, according to other embodiments of the presentinvention, and FIGS. 19, 20, 21, 22 and 23 are cross-sectional viewsshowing steps of the light-emitting device

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 package manufacturing method of FIG. 18.

As illustrated in FIG. 18, a supporting member forming step S4 mayinclude a light-transmitting glass preparing step S4-1 for preparing alight-transmitting glass 52, a UV adhesive coating step S4-2 for coatinga UV adhesive 51 on the substrate strip 110 and the light-transmittingglass 52 to adhere the substrate strip 110 to the light-transmittingglass 52, and a substrate strip fixing step S4-3 for temporarily fixingthe substrate strip 110 onto the light-transmitting glass 52.

A package singulation step S5 may include a reflective member andsubstrate strip cutting step S5-1 for cutting the reflective member 140and the substrate strip 110, a UV light projection step S5-2 forprojecting UV light onto the UV adhesive 51 through thelight-transmitting glass 52 to eliminate an adhesive force of the UVadhesive 51, and a supporting member separation step S5-3 for separatingthe substrate strip 110 from the supporting member 50.

As illustrated in FIGS. 19 to 23, the light-emitting device packagemanufacturing method may include mounting the light-emitting devices 120on the substrate strip 110, forming the phosphor 130 on thelight-emitting devices 120, forming the reflective member 140 on thesubstrate strip 110 to surround the phosphor 130, forming the supportingmember 50 under the substrate strip 110 to support the substrate strip110, and cutting the substrate strip 110 and the reflective member 140.

In addition, the light-emitting device package manufacturing method mayinclude preparing the light-transmitting glass 52, coating the UVadhesive 51 on the substrate strip 110 and the light-transmitting glass52 to adhere the substrate strip 110 to the light-transmitting glass 52,temporarily fixing the substrate strip 110 onto the light-transmittingglass 52, cutting the reflective member 140 and the substrate strip 110along the cutting lines L, projecting UV light onto the UV adhesive 51through the light-transmitting glass 52 to eliminate an adhesive forceof the UV adhesive 51, and separating the substrate strip 110 from thesupporting member 50.

For example, the light-transmitting glass 52 may include variousthermoplastic or thermosetting hardeners, e.g., epoxy resin, acrylicresin, polyester resin, urethane resin, silicone resin, rubber,polyimide resin, polyisoimide, isocyanate-based resin, melamine-basedresin, acetone-based resin, phenon-based resin, polymer resin, and anoptical coupling curing accelerator such as a UV curing agent. Inaddition, all

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 types of insulating and heat-resistant resin may alsobe used.

FIG. 30 is a cross-sectional view of a light-emitting device package 105according to some embodiments of the present invention, FIG. 24 is aflowchart of a method for manufacturing light-emitting device packages,according to still other embodiments of the present invention, and FIGS.25, 26, 27, 28 and 29 are cross-sectional views showing steps of thelight-emitting device package manufacturing method of FIG. 24.

As illustrated in FIG. 30, the light-emitting device package 105according to some embodiments of the present invention may include asubstrate 111, the light-emitting device 120, the phosphor 130, areflective member 141, the supporting member 50, an insulator 54,through electrodes 56, and a rear wiring layer 58.

For example, the light-emitting device package 105 according to someembodiments of the present invention may include the light-emittingdevice 120 mounted on the substrate 111, the phosphor 130 provided onthe light-emitting device 120, the reflective member 141 provided tosurround the phosphor 130 and having a first cut surface 101 on a sidesurface thereof, and the supporting member 50 provided under thesubstrate 111 to support the substrate 111.

The substrate 111 may have a second cut surface 102 on a side surfacethereof, and the supporting member 50 may include the insulator 54 fixedunder the substrate 111 and having a third cut surface 103, the throughelectrodes 56 penetrating through the insulator 54, and the rear wiringlayer 58 connected to the through electrodes 56 and having a fourth cutsurface 104.

The first cut surface 101, the second cut surface 102, the third cutsurface 103, and the fourth cut surface 104 may be located on the sameplane.

As illustrated in FIG. 24, the light-emitting device packagemanufacturing method may include an insulator fixing step S4-4 forfixing the insulator 53 having provided the rear wiring layer 58thereon, under the substrate strip 110, a through hole forming step S4-5for forming through holes 55 in the insulator 53, and a throughelectrode forming step S4-6 for forming the through electrodes 56 in thethrough holes 55.

As illustrated in FIGS. 25 to 29, the light-emitting device packagemanufacturing method may include mounting the light-emitting devices 120on the substrate strip 110, forming the phosphor 130 on thelight-emitting devices 120,

SUBSTITUTE SPECIFICATION

Our Ref: 3300/41 forming the reflective member 140 on the substratestrip 110 to surround the phosphor 130, fixing the insulator 53 havingprovided the rear wiring layer 58 thereon, under the substrate strip110, forming the through holes 55 in the insulator 53, forming thethrough electrodes 56 in the through holes 55, and cutting along thecutting lines L1.

The light-emitting device package 105 may include the reflective member141 having the first cut surface 101, the substrate 111 having thesecond cut surface 102, the insulator 54 having the third cut surface103, and the rear wiring layer 58 having the fourth cut surface 104.

The first cut surface 101, the second cut surface 102, the third cutsurface 103, and the fourth cut surface 104 may be located on the sameplane.

In the through electrode forming step S4-6, as illustrated in FIG. 12,the through electrodes 56 and the rear wiring layer 58 may be formed inthe through holes 55 using a printing scheme such as jet printing orsilk printing.

Accordingly, since the through electrodes 56 and the rear wiring layer58 are formed using the same scheme, a manufacturing process may besimplified.

FIG. 31 is a cross-sectional view of a light-emitting device packagestrip according to still other embodiments of the present invention, andFIG. 32 is a cross-sectional view of a light-emitting device package107.

As illustrated in FIG. 31, the light-emitting device package stripincluding the light-emitting devices 120, the phosphor 130, thereflective member 140, and the substrate strip 110 including the throughelectrodes 56 and the rear wiring layer 58 may be cut along the cuttinglines L2.

As illustrated in FIG. 32, the light-emitting device package strip mayinclude the light-emitting device package 107 including the substrate111 and side electrodes 59 provided on side surfaces of the supportingmember 50.

For example, the light-emitting device 120 may be a light-emitting diode(LED) having a form of a flip chip electrically connected to thesubstrate 111 using a bonding medium.

The rear wiring layer 58 may include an electrically conductive materialsuch as copper (Cu), nickel (Ni), aluminium (Al), chromium (Cr), Iron(Fe), tungsten (W), or an alloy thereof.

Although not shown in any drawing, the light-emitting device 120 may beprovided in the form of a flip chip having a signal transfer medium suchas bumps or solder. In addition, all light-emitting devices havingterminals (partially) provided using bonding wire, all horizontal andvertical light-emitting devices, etc. may be used.

The substrate strip 110 includes a plurality of substrates 111, and mayhave various shapes.

A plurality of light-emitting devices 120 may be mounted on thesubstrate strip 110.

The light-emitting devices 120 may be formed of a semiconductor. Forexample, blue, green, red, and yellow LEDs, ultraviolet LEDs, andinfrared LEDs formed of a semiconductor nitride may be used.

Meanwhile, the substrate 111 may be a metal substrate having a mountingsurface for mounting the light-emitting device 20 thereon.

For example, the substrate 111 may be formed of an insulating orconductive material having a mechanical strength appropriate to supportor accommodate the light-emitting device 120.

For example, the substrate 111 may be formed of metal such as Al, Cu,Zn, Sn, Pb, Au, or Ag, and may be have a form of a perforated or bentplate.

The substrate 111 may be a printed circuit board (PCB) produced bystacking a plurality of epoxy-based resin sheets on one another.Alternatively, the substrate 111 may be a flexible printed circuit board(FPCB) formed of a flexible material.

Instead of the substrate 111, a synthetic resin substrate formed of, forexample, resin or glass epoxy may be used or a ceramic substrate may beused in consideration of heat conductivity.

To improve processability, the substrate 111 may be partially orentirely formed of at least one selected from the group consisting ofEMC, polyimide (PI), ceramic, graphene, synthetic fiber glass, andcombinations thereof.

The reflective member 140 is provided on the substrate strip 110 and mayinclude a metallic heat radiation layer mounted on the substrate strip110 to radiate heat generated from the light-emitting device 120.

The reflective member 140 may be formed of metal such as Al, Cu, Zn, Sn,Pb, Au, or Ag.

However, the reflective member 140 is not limited to the above metal andmay be molded integrally with the substrate strip 110 to reflect lightemitted from the light-emitting device 120. The reflective member 140may be formed of at least one selected from the group consisting of EMCincluding a reflective material, white silicone including a reflectivematerial, PSR, and combinations thereof.

These resins may contain a light-reflecting material such as titaniumoxide, silicon dioxide, titanium dioxide, zirconium dioxide, potassiumtitanate, alumina, aluminum nitride, boron nitride, mullite, chromium,or a white-based or metal-based component.

As described above, using a method for manufacturing light-emittingdevice packages according to some embodiments of the present invention,a large number of light-emitting device packages may be manufacturedthrough a simple process, the price of products may be reduced, and aperformance difference among manufactured products may be lowered.

Therefore, the light-emitting device packages may have a small and thinsize close to a chip size, and achieve a high color uniformity comparedto conventional light-emitting device packages.

According to the above-described embodiments of the present invention, alarge number of light-emitting device packages may be manufacturedthrough a simple process, the price of products may be reduced,productivity may be improved, and the performance of products may beincreased.

In addition, deformation of a substrate strip may be prevented duringlight-emitting device packages are manufactured, an error rate may belowered, process time and cost may be greatly reduced, the price ofproducts may be reduced, and thus productivity may be improved.

However, the scope of the present invention is not limited to the aboveeffects.

While the present invention has been particularly shown and describedwith reference to exemplary embodiments thereof, it will be understoodby those of ordinary skill in the art that various changes in form anddetails may be made therein without departing from the spirit and scopeof the present invention as defined by the following claims.

1-16. (canceled)
 17. A method for manufacturing light-emitting devicepackages, the method comprising: a light-emitting device mounting stepfor mounting a plurality of light-emitting devices on a substrate strip;a phosphor forming step for forming a phosphor on the plurality oflight-emitting device; a reflective member forming step for forming areflective member on the substrate strip to surround the phosphor; and apackage singulation step for singulating unit packages by cutting thesubstrate strip and the reflective member, wherein the substrate striphaving a plurality of first electrode and second electrode; and whereinan upper surface of the first electrode and the second electrode are ina plane surface with a lower surface of the light-emitting device, thephosphor, and the reflective member.
 18. The method of claim 17,wherein, in the package singulation step, each of the first electrodeand the second electrode is contacted with the light-emitting device,the phosphor and the reflective member.
 19. The method of claim 17,wherein, in the package singulation step, a side surface and a bottomsurface of the first electrode and the second electrode are exposed. 20.The method of claim 17, wherein, in the phosphor forming step, thephosphor is squeeze-printed on the substrate strip and thelight-emitting devices using a mask.
 21. The method of claim 17,wherein, in the reflective member forming step, a reflective memberaccommodation cavities are formed by disposing a plate mold on an uppersurface of the phosphor to surround the phosphor, and a molding materialis filled in the reflective member accommodation cavities.
 22. Themethod of claim 17, wherein, in the phosphor forming step, a phosphoraccommodation cavities is formed by disposing a mold on thelight-emitting devices, and the phosphor is filled in the phosphoraccommodation cavities.
 23. The method of claim 17, wherein the phosphorforming step comprises a reflective member accommodation cavity formingstep for forming reflective member accommodation cavities by cutting oretching parts of the phosphor.
 24. The method of claim 23, wherein inthe reflective member forming step, a molding material is filled in thereflective member accommodation cavities and the molding material isfilled in a fluid state and then hardened into the reflective member.25. A method for manufacturing light-emitting device packages, themethod comprising: a light-emitting device mounting step for mounting aplurality of light-emitting devices on a substrate strip; a phosphorforming step for forming a phosphor on the plurality of light-emittingdevice; a reflective member forming step for forming a reflective memberon the substrate strip to surround the phosphor; a support memberforming step of forming a support member below the substrate strip tosupport the substrate strip; and a package singulation step forsingulating unit packages by cutting the substrate strip and thereflective member.
 26. The method of claim 25, wherein the packagesingulation step comprises a supporting member separation step forseparating the substrate strip from the supporting member.
 27. Themethod of claim 25, wherein the supporting member forming stepcomprises: a light-transmitting glass preparing step for preparing alight-transmitting glass; a UV adhesive coating step for coating a UVadhesive on the substrate strip and the light-transmitting glass toadhere the substrate strip to the light-transmitting glass; and asubstrate strip fixing step for temporarily fixing the substrate striponto the light-transmitting glass.
 28. The method of claim 27, whereinthe package singulation step comprises: a reflective member andsubstrate strip cutting step for cutting the reflective member and thesubstrate strip; a UV light projection step for projecting UV light ontothe UV adhesive through the light-transmitting glass to eliminate anadhesive force of the UV adhesive; and a supporting member separationstep for separating the substrate strip from the supporting member. 29.A light-emitting device package comprising: a substrate having a firstelectrode and a second electrode; a light-emitting devices mounted onthe substrate; a phosphor provided on the light-emitting devices; and areflective member provide to surround the phosphor, wherein an uppersurface of the first electrode and the second electrode are in a planesurface with a lower surface of the light-emitting device, the phosphor,and the reflective member.
 30. The light-emitting device package ofclaim 29, wherein each of the first electrode and the second electrodeis contacted with the light-emitting device, the phosphor and thereflective member.
 31. The light-emitting device package of claim 29,wherein a side surface and a bottom surface of the first electrode andthe second electrode are exposed.
 32. The light-emitting device packageof claim 29, wherein: the reflective member has a first cut surface on aside surface thereof; and the first electrode and the second electrodehave a second cut surface on a side surface thereof.
 33. Thelight-emitting device package of claim 32, wherein the first cut surfaceand the second cut surface are located on the same plane.